4.0 (4.0672512) seconds in the 40-yard dash.
One-tenth of a second is called a "decisecond" (not to be confused with ten seconds which is called a "decasecond") However, in common parlance, simply saying "tenth of a second" is considered quite acceptable for nearly all applications.Example: "She ran the 40 meter dash in four seconds and 3 deciseconds."
A 4.48 40 equates to a time of 12.248 seconds for the 100m
3.5 seconds in the 30 yard dash equals 17.53 miles per hour.
It would be 23.3
11.99 seconds because 100 yard dash is 91 meters. 100 meters/91 meters = 1.09 Then do 11 seconds x 1.09 = 11.99 seconds. If you round it, you basically be getting a 12 second 100 meter dash.
Roughly 10 meters a second. He has the world record of 9.49 seconds for the 100 meter dash.
10.7 100 meter dash = 9.78 100 yards
A 12.5-second 100m equates to a time of 4.572 seconds in the 40-yard dash.
(100 meters/16 seconds) x (3,600 seconds/hour) x (1 mile/1,609.344 meters) = 13.981 mph(rounded)
9.7 seconds for 100 meters.
When Johnson broke the world record for the 200 meter dash at the Summer Olympics in Atlanta in 1996, he ran the first 100 meters in 10.12 seconds. As incredible as it may sound, he ran the second 100 meters in 9.19 seconds which, as of October 15, 2007, is .55 seconds below the world record in the 100 meter dash. Historians have compared that run with the long jump of Bob Beamon in the 1968 Summer Olympics in Mexico City where he broke the existing world record by 21 3/4 inches or .55 meters. He had a running start for the second 100.
A 220 yard dash time of 21.80 seconds translates to a time of 21.67 seconds for 200 meters.
It would convert to 10.5 seconds for 100 meters.
The equivalent time for the 100 yards dash based on a 9.58 second 100 meter dash world record is approximately 10.44 seconds.
100m/40s or 2.5 metres per second.
Asafa Powell of Jamaica ran the 100 meter dash in 9.77 seconds.